Finding the Fourth Proportional to 12,819.69, 19,235.49 and 4,919.58

Step by Step Solution

1. Step 1: Write the proportion equation
   12,819.69 : 19,235.49 = 4,919.58 : x
2. Step 2: Convert to fraction form
   12,819.69/19,235.49 = 4,919.58/x
3. Step 3: Cross multiply
   12,819.69x = 19,235.49 × 4,919.58
4. Step 4: Simplify right side
   12,819.69x = 94,630,531.89
5. Step 5: Solve for x
   x = 94,630,531.89/12,819.69
6. Step 6: Final answer
   x = 7,381.66